Battle of Sempach

Battle of Sempach
	Part of the expansion of the Swiss Confederation
	; The battle scene in the fresco in the battle chapel at Sempach.; 1886 restoration of a 17th-century painting, which was in turn based on a 16th-century work.
Date	9 July 1386
Location	near Sempach
Result	Swiss victory
Belligerents
Old Swiss Confederacy Lucerne; Uri; Schwyz; Unterwalden;	Duchy of Austria
Commanders and leaders
Petermann von Gundoldingen †	Leopold III, Duke of Austria † ; Johann von Ochsenstein †; Johann von Waldburg †
Strength
c. 1,000 – 1,500	c. 4,000, including 1,500 knights
Casualties and losses
c. 200-600	c. 1,500, among them c. 400 noblemen

The Battle of Sempach was fought on 9 July 1386, between Leopold III, Duke of Austria and the Old Swiss Confederacy. The battle was a decisive Swiss victory in which Duke Leopold and numerous Austrian nobles died. The victory helped turn the loosely allied Swiss Confederation into a more unified nation and is seen as a turning point in the growth of Switzerland.